Characterization of New Mutations in Pyrazinamide-resistant Strains of Mycobacterium Tuberculosis and Identification of Conserved Regions Important for the Catalytic Activity of the Pyrazinamidase PncA

Overview

Journal Antimicrob Agents Chemother

Publisher American Society for Microbiology

Specialty Pharmacology

Date 1999 Jul 2

PMID 10390238

Citations 51

Authors

N Lemaitre

W Sougakoff

C Truffot-Pernot

V Jarlier

Affiliations

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Abstract

A new set of mutations, including transposition of the insertion sequence IS6110, was identified in the pncA gene from 19 pyrazinamide-resistant Mycobacterium tuberculosis strains. Alignment of the PncA protein from M. tuberculosis with homologous proteins from different bacterial species revealed three highly conserved regions in PncA which may play an important role in the processing of pyrazinamide.

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